/*
 * Copyright (C) 2009, 2010 Nick Johnson <nickbjohnson4224 at gmail.com>
 * 
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <stdio.h>
#include <ctype.h>
#include <stdarg.h>
#include <string.h>
#include <stdlib.h>

/****************************************************************************
 * vsprintf
 *
 * XXX - doc
 */

int vsprintf(char *str, const char *format, va_list ap) {
	size_t i;
	const char *format_tmp;
	char m[2];
	char *string;

	strcpy(str, "");
	m[1] = '\0';

	for (i = 0; format[i]; i++) {
		if (format[i] == '%') {
			format_tmp = &format[i];
			string = __format(&format_tmp, &ap);
			i = (uintptr_t) format_tmp - (uintptr_t) format;
			if (!string) continue;
			strcat(str, string);
			free(string);
		}
		else {
			m[0] = format[i];
			strcat(str, m);
		}
	}

	return i;
}
